Portable tool holder



FIG. 1 is a perspective view of a portable tool holder, showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is an alternate perspective view thereof.

The broken line showing, in FIG. 8, is included for the purpose of illustrating environment and forms no part of the claimed design. 

The ornamental design for a portable tool holder, as shown and described. 